mmc: core: new discard feature support at eMMC v4.5
authorKyungmin Park <kyungmin.park@samsung.com>
Tue, 18 Oct 2011 00:34:04 +0000 (09:34 +0900)
committerChris Ball <cjb@laptop.org>
Wed, 26 Oct 2011 20:32:27 +0000 (16:32 -0400)
commitb3bf915308ca2b50f3beec6cc824083870f0f4b5
tree955978242b333e1388358b4b50b5f8f4a5abca04
parentd9ddd62943ee07a75d0428ffcf52f1a747a28c39
mmc: core: new discard feature support at eMMC v4.5

MMC v4.5 supports the DISCARD feature (CMD38).  It's different from
trim and there's no check bit.  Currently it's only supported at v4.5.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
drivers/mmc/card/block.c
drivers/mmc/core/core.c
drivers/mmc/core/mmc.c
include/linux/mmc/card.h
include/linux/mmc/core.h